Ripping scissors



Au .14,-1945. A Ms 2,382,281

RIPPING' scIssoRs Filed Sept, 18, 1944 [KW/flaws INVENTOR.

Patented Aug. 14, 1945 v matey nirrme scrssons" g Lewes.amasgmu imex. H a lippliatitinseptember18,194 1,-Serfa1Np.554,841

eciaims'. (0130-261) i iTh'i's inVfitieh relates to shears i scissors and particular "reference "to new and useful impe vem'ents fin-Tipping shears.

The objects efthe invention are, first: to pro- Wide-i'ipping shears or scissors havingmean's on white ltfthe blades thereof for detachably retaining iitting element, preferably a razor blade, which 5s in relation to thecompa'nion blade tithe shears-as to present-an eflicien't-cuttih edge some stitches er a seam 'to quiclily'sever them 'wivithefit injury tdthefahfic; second: to provide an adjustable s tmgend latching means therefor to-ih aintiain predetermined spacing of the handle elements of the scissors under tension 0f spring, combined with meansfor limiting tl'te relative eisp aeement of the handle elements ender such spring tension, to correspondingl 'eentrci th'e hievements-of the cutting 'lolades, to "thereby facilitate the ripping operation; "third: tt;"provide 'o'hthe te'nsioning "spring, means for holding the 'Same iH-GfieitttiVe and inoperative positions.

wit-tithe foregoing objects as paramouht; the inveefibn has further refeience to certain featu'res eraeeempnshment which will become apparent as the description proceeds, taken in conr'ictitih the accompanying drawing Wheresteered is a side elewttional viewer apalir of r-ippi n g constructed according to the preseht invention, *sho'w'ihg'the latching means in'opeeetivelwdismsen. n

steers 2is a similar viewbut showing the spring in operative position to effect correspond-t imposition of thecutti-hg blades.

' Figure 3 is a fragmentary perspective View srremng the spring inthe same position as illustrated in Figure 2. l

- its a vertical section taken on line 4+! on Figure 2. I H

Figure 5 1s a perspective view of the spring 'per "Figure fiis' a vertical sectional view taken on i Figures and, A 1 metre ti'saperspeetive bf the stirrupememyed for limiting the tensienaidispmcement.oi the latching spring. U l

a more detailed description of the drawing, reference is primarily made to Figure 1 wherein numeral l0 denotes the handle integral with the conventional blade I I while numeral I2 renotes the handle integral with the improved blade mountind 13 which latter is so designed and constructed as to accommodate a detachable cutting blade l4.

detachable timing blade I l *e'cns'lsts preferahly of 'a eonventienal safety razoriblade, prohably'hfthe double edge variety broken'in half. Obviously a detachable blefie may fbe especially .9 designed for this purposebut inasmuch as great quantities of ram iblades are 'cast err and wasted, they may continue mserve auseful purpose when applie -as descriloedfherein. As a means for a't 'ta'ching the elude tothe biade mounting is,

thelat'ter is emma ftoproduoe a rec ss l5fto aceemmoaate the blade. n win he notjed in Figu e-"e that-theplahe'ef this recess s inclined a -slight -degre'e inrelation to the "eo'iifronting face efthecompeniciitime -*ll 5S0 as to properly dis to the effective edge of the blade H. "To secure thetl'ale t4 to the inohhting i3, 'a spring clip 1 6 of cirbuitblfl'sififlhhtibn 1 extends a distance axially 6f the mounting I 3 and Whose ends ex- 'tend'through and are anchored from the opposite side or the lade-mounting [-3 at n eisure 6) spring the 1 s' lies-flush against the recess 1 s or trre tlademeuatingis so thatwhen the blade lt' is in'seited th'e'ieunder, it will impose sufii- -1 lac'e. supplementing this pressure as a holdi gmeahs rorthe blade, relatively spaced projectie'ns lib-extending frointhehaek 'of the blade d between which the ends of "the clip I6 extend, e eiiectiveto prevent longitudinal displacement @f' the-hlade l4. "'rnese proje'ctiensare usually present on each of {a hlade which has been broken in two, hithoiig h they may i be especially termed dn-at1adepeesigneti tor fuse with the steamer the invention. a

In us'ing tl ie shears for ripping seems; it =is preferred thatthe blade -ll be held insuch relafinsh'ip the blhd'ihdllhting [3 that the cut- 6mg edge of the bl'ade l'4 lie angularly across "thehi i-eet-ive'ed'ge of the Blade ll in the approximate relationship shown in Figure 2,better resu1ts'bin'g'hed when "such relationshipbf the cutting blades is maintained under sprin tensite. To alebdii'ipl'ish thisa ie'a'f spring is ispro:

5 need and shown in detail in Figure 5.1 h spring hash slot 20 disposed longitudinally thereof, through which is passed a-screw" 2| ,loy'whieh the spring is secured for 'ieneitudinal displacement to a boss 22 formed on the handle element ll! of the blad ll. Formed on one edge of the spring 19 and bent to overlie one face thereof is an arm 23. The purpose of this arm is to hold the spring l9 in adjusted position, it being apparent that when disposed on one side of the head a of the screw 2 l, the spring is in operative position spring, asfdescribed. I

The inner end of the spring I9'is turned underthe main body portion thereof and is bifurcated to form a slot 24 parallel with the axis of the spring.

element l2 of the blade mounting l3.

When the spring I9 is in engaged relationshipwith the protuberance 26, as shown in Figures 2 and 3,;the cutting elements of the shears are disposed in the preferred position for,ripping but in orderto limit therelative displacement of the blades the.hooked end of. the spring [9 i is restricted in its travel by meansof a stirrup 28,

. shown in detail in Figure "7 This stirrup consists of a Ueshaped member, whose legs aresecured on either. side of, the handle element H L while the lower portion thereof embraces theendpf the spring, as shown. Longitudinaldisplacement -of. the spring .[9 is so limitedby the slotZU that ,at notime isthe hooked end of;.the spring complet l free from the stirrup 28;, Whensin latched position with the protuberance 2B, the tip end ofthe spring extends Withinthe stirrup 28 ting;b1ades are correspondingly limited,

The ripping operation is usuallyperformed by, inserting the fingers through the openi gs 29 in the handle element ID to guidesthe -shears .into the stitches of thejseam, allowing the handle element l2 to move freely under; tension of thespring I9. In order to preventthe cutting elements from being closedentirely, the spring I9 projects rearwardly, when in latched position so that its rear end 30, will lie between the handle elements H] and i2. The end-3i] of the spring is shown as being-built up and .itis; apparent ,outrestriction. 1 N v H Manifestly, the construction as shown ,and; de-

scribedfis capable of some modification and such modificationas may be construed to fall within the scope and meaning-of the: appended claims is also, considered-to be within-the spirit and intent of ,theinvention. g v

What is claimedis:

In latched position of the shears, the slot 24 of the spring receives the head,25 of a screw or other protuberance 26, extending up and when disposed on the opposite side of this 1. A ripping scissors including a pivoted blade and a razor blade mounting, each having a handle element, said blade mounting having a longitudinal recess defining a ledge along its top and receiving a razor blade, a tortuous spring disposed longitudinally on the face of said recess, having its ends embedded therein and bearing tensionally thereagainst to retain said razor blade, means limiting the relative displacement of said scissors blade and razor blade mounting, said means consisting of a slotted leaf spring mounted upon and adjustable longitudinally with respect to the handle element of said scissors blade, means carried by the companion handle. element for engaging the slot of said spring and means for limiting the displacement of said 'spring'as said handle elements are actuated. wardly from a boss 21, formed on the handle ,and-its movement is limited to the length of the stirrup and consequently movements of the cutspring means to accordingly restrict the ,dis-

2. A ripping scissors including a pivoted scissors blade and a blade mounting, each having a'han'dle element, a detachable blade secured in said blade mounting whose cutting edge coinmovement of the hooked end of said spring.

;3 A ripping scissors including pivoted arms, one of which defines a cutting blade, the other detachably carrying a complementary cutting blade, both arms having; handle elements, spring means adjustably mounted on one of said handleelements and engageable withmeans, on the. companion handleelement for yieldingly re- .sisting the opening movement of said arms-and means for restricting the movement of said placement of said arms; 1

4, A scissors comprising a hinged blade and blade mounting a blade ,detachably secured to said blade mounting, handle elements ,for said blade and mounting, spring means attached to one handle element and engageable at one end with means on the companion handle element to yieldingly resistopening of said blade and mounting, means to limitv movements of said spring .means to correspondingly limit the displacement of said blade and mounting and means to limit the closing action of said blade and mounting. V in n r 5. A scissors includin'g pivoted, complementary cutting members, one of which is detachable,

handle elements for each of said members, spring means on one of said elements engageable with means onthe companion element for yieldably resisting opening action thereoi and further adapted to prevent full closing of said, cutting members. i r 6. The structureas, described in claim; ,5, further defined in that the spring means is longitudinally adjustable to .release thecutting members for,conventionaloperation as scissors,

, LEWISTA', Aivns. 

